forked from KolibriOS/kolibrios
699 lines
22 KiB
C++
699 lines
22 KiB
C++
/*
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*
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* Copyright (c) 1994
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* Hewlett-Packard Company
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Hewlett-Packard Company makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*
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* Copyright (c) 1996-1999
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* Silicon Graphics Computer Systems, Inc.
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Silicon Graphics makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*/
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/* NOTE: This is an internal header file, included by other STL headers.
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* You should not attempt to use it directly.
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*/
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#ifndef __SGI_STL_INTERNAL_BVECTOR_H
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#define __SGI_STL_INTERNAL_BVECTOR_H
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namespace std
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{
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static const int __WORD_BIT = int(CHAR_BIT*sizeof(unsigned int));
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struct _Bit_reference {
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unsigned int* _M_p;
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unsigned int _M_mask;
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_Bit_reference(unsigned int* __x, unsigned int __y)
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: _M_p(__x), _M_mask(__y) {}
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public:
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_Bit_reference() : _M_p(0), _M_mask(0) {}
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operator bool() const { return !(!(*_M_p & _M_mask)); }
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_Bit_reference& operator=(bool __x)
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{
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if (__x) *_M_p |= _M_mask;
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else *_M_p &= ~_M_mask;
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return *this;
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}
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_Bit_reference& operator=(const _Bit_reference& __x)
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{ return *this = bool(__x); }
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bool operator==(const _Bit_reference& __x) const
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{ return bool(*this) == bool(__x); }
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bool operator<(const _Bit_reference& __x) const {
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return !bool(*this) && bool(__x);
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}
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void flip() { *_M_p ^= _M_mask; }
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};
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inline void swap(_Bit_reference __x, _Bit_reference __y)
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{
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bool __tmp = __x;
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__x = __y;
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__y = __tmp;
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}
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struct _Bit_iterator_base : public random_access_iterator<bool, ptrdiff_t>
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{
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unsigned int* _M_p;
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unsigned int _M_offset;
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_Bit_iterator_base(unsigned int* __x, unsigned int __y)
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: _M_p(__x), _M_offset(__y) {}
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void _M_bump_up() {
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if (_M_offset++ == __WORD_BIT - 1) {
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_M_offset = 0;
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++_M_p;
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}
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}
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void _M_bump_down() {
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if (_M_offset-- == 0) {
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_M_offset = __WORD_BIT - 1;
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--_M_p;
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}
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}
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void _M_incr(ptrdiff_t __i) {
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difference_type __n = __i + _M_offset;
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_M_p += __n / __WORD_BIT;
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__n = __n % __WORD_BIT;
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if (__n < 0) {
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_M_offset = (unsigned int) __n + __WORD_BIT;
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--_M_p;
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} else
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_M_offset = (unsigned int) __n;
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}
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bool operator==(const _Bit_iterator_base& __i) const {
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return _M_p == __i._M_p && _M_offset == __i._M_offset;
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}
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bool operator<(const _Bit_iterator_base& __i) const {
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return _M_p < __i._M_p || (_M_p == __i._M_p && _M_offset < __i._M_offset);
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}
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bool operator!=(const _Bit_iterator_base& __i) const {
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return !(*this == __i);
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}
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bool operator>(const _Bit_iterator_base& __i) const {
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return __i < *this;
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}
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bool operator<=(const _Bit_iterator_base& __i) const {
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return !(__i < *this);
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}
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bool operator>=(const _Bit_iterator_base& __i) const {
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return !(*this < __i);
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}
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};
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inline ptrdiff_t
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operator-(const _Bit_iterator_base& __x, const _Bit_iterator_base& __y) {
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return __WORD_BIT * (__x._M_p - __y._M_p) + __x._M_offset - __y._M_offset;
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}
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struct _Bit_iterator : public _Bit_iterator_base
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{
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typedef _Bit_reference reference;
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typedef _Bit_reference* pointer;
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typedef _Bit_iterator iterator;
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_Bit_iterator() : _Bit_iterator_base(0, 0) {}
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_Bit_iterator(unsigned int* __x, unsigned int __y)
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: _Bit_iterator_base(__x, __y) {}
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reference operator*() const { return reference(_M_p, 1U << _M_offset); }
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iterator& operator++() {
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_M_bump_up();
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return *this;
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}
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iterator operator++(int) {
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iterator __tmp = *this;
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_M_bump_up();
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return __tmp;
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}
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iterator& operator--() {
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_M_bump_down();
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return *this;
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}
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iterator operator--(int) {
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iterator __tmp = *this;
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_M_bump_down();
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return __tmp;
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}
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iterator& operator+=(difference_type __i) {
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_M_incr(__i);
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return *this;
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}
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iterator& operator-=(difference_type __i) {
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*this += -__i;
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return *this;
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}
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iterator operator+(difference_type __i) const {
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iterator __tmp = *this;
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return __tmp += __i;
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}
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iterator operator-(difference_type __i) const {
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iterator __tmp = *this;
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return __tmp -= __i;
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}
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reference operator[](difference_type __i) { return *(*this + __i); }
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};
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inline _Bit_iterator
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operator+(ptrdiff_t __n, const _Bit_iterator& __x) { return __x + __n; }
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struct _Bit_const_iterator : public _Bit_iterator_base
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{
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typedef bool reference;
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typedef bool const_reference;
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typedef const bool* pointer;
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typedef _Bit_const_iterator const_iterator;
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_Bit_const_iterator() : _Bit_iterator_base(0, 0) {}
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_Bit_const_iterator(unsigned int* __x, unsigned int __y)
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: _Bit_iterator_base(__x, __y) {}
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_Bit_const_iterator(const _Bit_iterator& __x)
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: _Bit_iterator_base(__x._M_p, __x._M_offset) {}
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const_reference operator*() const {
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return _Bit_reference(_M_p, 1U << _M_offset);
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}
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const_iterator& operator++() {
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_M_bump_up();
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return *this;
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}
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const_iterator operator++(int) {
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const_iterator __tmp = *this;
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_M_bump_up();
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return __tmp;
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}
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const_iterator& operator--() {
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_M_bump_down();
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return *this;
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}
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const_iterator operator--(int) {
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const_iterator __tmp = *this;
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_M_bump_down();
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return __tmp;
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}
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const_iterator& operator+=(difference_type __i) {
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_M_incr(__i);
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return *this;
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}
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const_iterator& operator-=(difference_type __i) {
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*this += -__i;
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return *this;
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}
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const_iterator operator+(difference_type __i) const {
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const_iterator __tmp = *this;
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return __tmp += __i;
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}
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const_iterator operator-(difference_type __i) const {
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const_iterator __tmp = *this;
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return __tmp -= __i;
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}
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const_reference operator[](difference_type __i) {
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return *(*this + __i);
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}
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};
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inline _Bit_const_iterator
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operator+(ptrdiff_t __n, const _Bit_const_iterator& __x) { return __x + __n; }
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// Bit-vector base class, which encapsulates the difference between
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// old SGI-style allocators and standard-conforming allocators.
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// Base class for ordinary allocators.
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template <class _Allocator, bool __is_static>
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class _Bvector_alloc_base {
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public:
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typedef typename _Alloc_traits<bool, _Allocator>::allocator_type
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allocator_type;
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allocator_type get_allocator() const { return _M_data_allocator; }
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_Bvector_alloc_base(const allocator_type& __a)
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: _M_data_allocator(__a), _M_start(), _M_finish(), _M_end_of_storage(0) {}
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protected:
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unsigned int* _M_bit_alloc(size_t __n)
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{ return _M_data_allocator.allocate((__n + __WORD_BIT - 1)/__WORD_BIT); }
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void _M_deallocate() {
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if (_M_start._M_p)
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_M_data_allocator.deallocate(_M_start._M_p,
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_M_end_of_storage - _M_start._M_p);
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}
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typename _Alloc_traits<unsigned int, _Allocator>::allocator_type
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_M_data_allocator;
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_Bit_iterator _M_start;
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_Bit_iterator _M_finish;
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unsigned int* _M_end_of_storage;
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};
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// Specialization for instanceless allocators.
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template <class _Allocator>
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class _Bvector_alloc_base<_Allocator, true> {
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public:
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typedef typename _Alloc_traits<bool, _Allocator>::allocator_type
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allocator_type;
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allocator_type get_allocator() const { return allocator_type(); }
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_Bvector_alloc_base(const allocator_type&)
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: _M_start(), _M_finish(), _M_end_of_storage(0) {}
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protected:
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typedef typename _Alloc_traits<unsigned int, _Allocator>::_Alloc_type
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_Alloc_type;
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unsigned int* _M_bit_alloc(size_t __n)
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{ return _Alloc_type::allocate((__n + __WORD_BIT - 1)/__WORD_BIT); }
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void _M_deallocate() {
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if (_M_start._M_p)
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_Alloc_type::deallocate(_M_start._M_p,
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_M_end_of_storage - _M_start._M_p);
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}
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_Bit_iterator _M_start;
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_Bit_iterator _M_finish;
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unsigned int* _M_end_of_storage;
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};
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template <class _Alloc>
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class _Bvector_base
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: public _Bvector_alloc_base<_Alloc,
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_Alloc_traits<bool, _Alloc>::_S_instanceless>
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{
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typedef _Bvector_alloc_base<_Alloc,
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_Alloc_traits<bool, _Alloc>::_S_instanceless>
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_Base;
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public:
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typedef typename _Base::allocator_type allocator_type;
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_Bvector_base(const allocator_type& __a) : _Base(__a) {}
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~_Bvector_base() { _Base::_M_deallocate(); }
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};
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} // namespace std
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// Declare a partial specialization of vector<T, Alloc>.
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#include <bits/stl_vector.h>
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namespace std
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{
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template <typename _Alloc>
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class vector<bool, _Alloc> : public _Bvector_base<_Alloc>
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{
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public:
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typedef bool value_type;
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typedef size_t size_type;
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typedef ptrdiff_t difference_type;
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typedef _Bit_reference reference;
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typedef bool const_reference;
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typedef _Bit_reference* pointer;
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typedef const bool* const_pointer;
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typedef _Bit_iterator iterator;
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typedef _Bit_const_iterator const_iterator;
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typedef reverse_iterator<const_iterator> const_reverse_iterator;
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typedef reverse_iterator<iterator> reverse_iterator;
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typedef typename _Bvector_base<_Alloc>::allocator_type allocator_type;
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allocator_type get_allocator() const {
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return _Bvector_base<_Alloc>::get_allocator();
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}
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protected:
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using _Bvector_base<_Alloc>::_M_bit_alloc;
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using _Bvector_base<_Alloc>::_M_deallocate;
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using _Bvector_base<_Alloc>::_M_start;
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using _Bvector_base<_Alloc>::_M_finish;
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using _Bvector_base<_Alloc>::_M_end_of_storage;
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protected:
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void _M_initialize(size_type __n) {
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unsigned int* __q = _M_bit_alloc(__n);
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_M_end_of_storage = __q + (__n + __WORD_BIT - 1)/__WORD_BIT;
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_M_start = iterator(__q, 0);
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_M_finish = _M_start + difference_type(__n);
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}
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void _M_insert_aux(iterator __position, bool __x) {
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if (_M_finish._M_p != _M_end_of_storage) {
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copy_backward(__position, _M_finish, _M_finish + 1);
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*__position = __x;
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++_M_finish;
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}
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else {
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size_type __len = size() ? 2 * size() : __WORD_BIT;
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unsigned int* __q = _M_bit_alloc(__len);
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iterator __i = copy(begin(), __position, iterator(__q, 0));
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*__i++ = __x;
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_M_finish = copy(__position, end(), __i);
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_M_deallocate();
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_M_end_of_storage = __q + (__len + __WORD_BIT - 1)/__WORD_BIT;
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_M_start = iterator(__q, 0);
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}
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}
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template <class _InputIterator>
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void _M_initialize_range(_InputIterator __first, _InputIterator __last,
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input_iterator_tag) {
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_M_start = iterator();
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_M_finish = iterator();
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_M_end_of_storage = 0;
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for ( ; __first != __last; ++__first)
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push_back(*__first);
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}
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template <class _ForwardIterator>
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void _M_initialize_range(_ForwardIterator __first, _ForwardIterator __last,
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forward_iterator_tag) {
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size_type __n = 0;
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distance(__first, __last, __n);
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_M_initialize(__n);
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copy(__first, __last, _M_start);
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}
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template <class _InputIterator>
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void _M_insert_range(iterator __pos,
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_InputIterator __first, _InputIterator __last,
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input_iterator_tag) {
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for ( ; __first != __last; ++__first) {
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__pos = insert(__pos, *__first);
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++__pos;
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}
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}
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template <class _ForwardIterator>
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void _M_insert_range(iterator __position,
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_ForwardIterator __first, _ForwardIterator __last,
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forward_iterator_tag) {
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if (__first != __last) {
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size_type __n = 0;
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distance(__first, __last, __n);
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if (capacity() - size() >= __n) {
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copy_backward(__position, end(), _M_finish + difference_type(__n));
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copy(__first, __last, __position);
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_M_finish += difference_type(__n);
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}
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else {
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size_type __len = size() + max(size(), __n);
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unsigned int* __q = _M_bit_alloc(__len);
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iterator __i = copy(begin(), __position, iterator(__q, 0));
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__i = copy(__first, __last, __i);
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_M_finish = copy(__position, end(), __i);
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_M_deallocate();
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_M_end_of_storage = __q + (__len + __WORD_BIT - 1)/__WORD_BIT;
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_M_start = iterator(__q, 0);
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}
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}
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}
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public:
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iterator begin() { return _M_start; }
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const_iterator begin() const { return _M_start; }
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iterator end() { return _M_finish; }
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const_iterator end() const { return _M_finish; }
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reverse_iterator rbegin() { return reverse_iterator(end()); }
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const_reverse_iterator rbegin() const {
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return const_reverse_iterator(end());
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}
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reverse_iterator rend() { return reverse_iterator(begin()); }
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const_reverse_iterator rend() const {
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return const_reverse_iterator(begin());
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}
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size_type size() const { return size_type(end() - begin()); }
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size_type max_size() const { return size_type(-1); }
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size_type capacity() const {
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return size_type(const_iterator(_M_end_of_storage, 0) - begin());
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}
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bool empty() const { return begin() == end(); }
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reference operator[](size_type __n)
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{ return *(begin() + difference_type(__n)); }
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const_reference operator[](size_type __n) const
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{ return *(begin() + difference_type(__n)); }
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void _M_range_check(size_type __n) const {
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if (__n >= this->size())
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__throw_range_error("vector<bool>");
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}
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reference at(size_type __n)
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{ _M_range_check(__n); return (*this)[__n]; }
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const_reference at(size_type __n) const
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{ _M_range_check(__n); return (*this)[__n]; }
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explicit vector(const allocator_type& __a = allocator_type())
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: _Bvector_base<_Alloc>(__a) {}
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vector(size_type __n, bool __value,
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const allocator_type& __a = allocator_type())
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: _Bvector_base<_Alloc>(__a)
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{
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_M_initialize(__n);
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fill(_M_start._M_p, _M_end_of_storage, __value ? ~0 : 0);
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}
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explicit vector(size_type __n)
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: _Bvector_base<_Alloc>(allocator_type())
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{
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_M_initialize(__n);
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fill(_M_start._M_p, _M_end_of_storage, 0);
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}
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vector(const vector& __x) : _Bvector_base<_Alloc>(__x.get_allocator()) {
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_M_initialize(__x.size());
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copy(__x.begin(), __x.end(), _M_start);
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}
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// Check whether it's an integral type. If so, it's not an iterator.
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template <class _Integer>
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void _M_initialize_dispatch(_Integer __n, _Integer __x, __true_type) {
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_M_initialize(__n);
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fill(_M_start._M_p, _M_end_of_storage, __x ? ~0 : 0);
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}
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template <class _InputIterator>
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void _M_initialize_dispatch(_InputIterator __first, _InputIterator __last,
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__false_type) {
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_M_initialize_range(__first, __last, __iterator_category(__first));
|
|
}
|
|
|
|
template <class _InputIterator>
|
|
vector(_InputIterator __first, _InputIterator __last,
|
|
const allocator_type& __a = allocator_type())
|
|
: _Bvector_base<_Alloc>(__a)
|
|
{
|
|
typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
|
|
_M_initialize_dispatch(__first, __last, _Integral());
|
|
}
|
|
|
|
~vector() { }
|
|
|
|
vector& operator=(const vector& __x) {
|
|
if (&__x == this) return *this;
|
|
if (__x.size() > capacity()) {
|
|
_M_deallocate();
|
|
_M_initialize(__x.size());
|
|
}
|
|
copy(__x.begin(), __x.end(), begin());
|
|
_M_finish = begin() + difference_type(__x.size());
|
|
return *this;
|
|
}
|
|
|
|
// assign(), a generalized assignment member function. Two
|
|
// versions: one that takes a count, and one that takes a range.
|
|
// The range version is a member template, so we dispatch on whether
|
|
// or not the type is an integer.
|
|
|
|
void _M_fill_assign(size_t __n, bool __x) {
|
|
if (__n > size()) {
|
|
fill(_M_start._M_p, _M_end_of_storage, __x ? ~0 : 0);
|
|
insert(end(), __n - size(), __x);
|
|
}
|
|
else {
|
|
erase(begin() + __n, end());
|
|
fill(_M_start._M_p, _M_end_of_storage, __x ? ~0 : 0);
|
|
}
|
|
}
|
|
|
|
void assign(size_t __n, bool __x) { _M_fill_assign(__n, __x); }
|
|
|
|
template <class _InputIterator>
|
|
void assign(_InputIterator __first, _InputIterator __last) {
|
|
typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
|
|
_M_assign_dispatch(__first, __last, _Integral());
|
|
}
|
|
|
|
template <class _Integer>
|
|
void _M_assign_dispatch(_Integer __n, _Integer __val, __true_type)
|
|
{ _M_fill_assign((size_t) __n, (bool) __val); }
|
|
|
|
template <class _InputIter>
|
|
void _M_assign_dispatch(_InputIter __first, _InputIter __last, __false_type)
|
|
{ _M_assign_aux(__first, __last, __iterator_category(__first)); }
|
|
|
|
template <class _InputIterator>
|
|
void _M_assign_aux(_InputIterator __first, _InputIterator __last,
|
|
input_iterator_tag) {
|
|
iterator __cur = begin();
|
|
for ( ; __first != __last && __cur != end(); ++__cur, ++__first)
|
|
*__cur = *__first;
|
|
if (__first == __last)
|
|
erase(__cur, end());
|
|
else
|
|
insert(end(), __first, __last);
|
|
}
|
|
|
|
template <class _ForwardIterator>
|
|
void _M_assign_aux(_ForwardIterator __first, _ForwardIterator __last,
|
|
forward_iterator_tag) {
|
|
size_type __len = 0;
|
|
distance(__first, __last, __len);
|
|
if (__len < size())
|
|
erase(copy(__first, __last, begin()), end());
|
|
else {
|
|
_ForwardIterator __mid = __first;
|
|
advance(__mid, size());
|
|
copy(__first, __mid, begin());
|
|
insert(end(), __mid, __last);
|
|
}
|
|
}
|
|
|
|
void reserve(size_type __n) {
|
|
if (capacity() < __n) {
|
|
unsigned int* __q = _M_bit_alloc(__n);
|
|
_M_finish = copy(begin(), end(), iterator(__q, 0));
|
|
_M_deallocate();
|
|
_M_start = iterator(__q, 0);
|
|
_M_end_of_storage = __q + (__n + __WORD_BIT - 1)/__WORD_BIT;
|
|
}
|
|
}
|
|
|
|
reference front() { return *begin(); }
|
|
const_reference front() const { return *begin(); }
|
|
reference back() { return *(end() - 1); }
|
|
const_reference back() const { return *(end() - 1); }
|
|
void push_back(bool __x) {
|
|
if (_M_finish._M_p != _M_end_of_storage)
|
|
*_M_finish++ = __x;
|
|
else
|
|
_M_insert_aux(end(), __x);
|
|
}
|
|
void swap(vector<bool, _Alloc>& __x) {
|
|
std::swap(_M_start, __x._M_start);
|
|
std::swap(_M_finish, __x._M_finish);
|
|
std::swap(_M_end_of_storage, __x._M_end_of_storage);
|
|
}
|
|
iterator insert(iterator __position, bool __x = bool()) {
|
|
difference_type __n = __position - begin();
|
|
if (_M_finish._M_p != _M_end_of_storage && __position == end())
|
|
*_M_finish++ = __x;
|
|
else
|
|
_M_insert_aux(__position, __x);
|
|
return begin() + __n;
|
|
}
|
|
|
|
// Check whether it's an integral type. If so, it's not an iterator.
|
|
|
|
template <class _Integer>
|
|
void _M_insert_dispatch(iterator __pos, _Integer __n, _Integer __x,
|
|
__true_type) {
|
|
_M_fill_insert(__pos, __n, __x);
|
|
}
|
|
|
|
template <class _InputIterator>
|
|
void _M_insert_dispatch(iterator __pos,
|
|
_InputIterator __first, _InputIterator __last,
|
|
__false_type) {
|
|
_M_insert_range(__pos, __first, __last, __iterator_category(__first));
|
|
}
|
|
|
|
template <class _InputIterator>
|
|
void insert(iterator __position,
|
|
_InputIterator __first, _InputIterator __last) {
|
|
typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
|
|
_M_insert_dispatch(__position, __first, __last, _Integral());
|
|
}
|
|
|
|
void _M_fill_insert(iterator __position, size_type __n, bool __x) {
|
|
if (__n == 0) return;
|
|
if (capacity() - size() >= __n) {
|
|
copy_backward(__position, end(), _M_finish + difference_type(__n));
|
|
fill(__position, __position + difference_type(__n), __x);
|
|
_M_finish += difference_type(__n);
|
|
}
|
|
else {
|
|
size_type __len = size() + max(size(), __n);
|
|
unsigned int* __q = _M_bit_alloc(__len);
|
|
iterator __i = copy(begin(), __position, iterator(__q, 0));
|
|
fill_n(__i, __n, __x);
|
|
_M_finish = copy(__position, end(), __i + difference_type(__n));
|
|
_M_deallocate();
|
|
_M_end_of_storage = __q + (__len + __WORD_BIT - 1)/__WORD_BIT;
|
|
_M_start = iterator(__q, 0);
|
|
}
|
|
}
|
|
|
|
void insert(iterator __position, size_type __n, bool __x) {
|
|
_M_fill_insert(__position, __n, __x);
|
|
}
|
|
|
|
void pop_back() { --_M_finish; }
|
|
iterator erase(iterator __position) {
|
|
if (__position + 1 != end())
|
|
copy(__position + 1, end(), __position);
|
|
--_M_finish;
|
|
return __position;
|
|
}
|
|
iterator erase(iterator __first, iterator __last) {
|
|
_M_finish = copy(__last, end(), __first);
|
|
return __first;
|
|
}
|
|
void resize(size_type __new_size, bool __x = bool()) {
|
|
if (__new_size < size())
|
|
erase(begin() + difference_type(__new_size), end());
|
|
else
|
|
insert(end(), __new_size - size(), __x);
|
|
}
|
|
void flip() {
|
|
for (unsigned int* __p = _M_start._M_p; __p != _M_end_of_storage; ++__p)
|
|
*__p = ~*__p;
|
|
}
|
|
|
|
void clear() { erase(begin(), end()); }
|
|
};
|
|
|
|
// This typedef is non-standard. It is provided for backward compatibility.
|
|
typedef vector<bool, alloc> bit_vector;
|
|
|
|
} // namespace std
|
|
|
|
#endif /* __SGI_STL_INTERNAL_BVECTOR_H */
|
|
|
|
// Local Variables:
|
|
// mode:C++
|
|
// End:
|